Cloth roll support



Junefi, 1950 I A. E. ZABRISKIE ETAL 2,510,454

CLOTH ROLL SUPPORT I Filed 'Sept. 24, 1948 2 Sheets-Sheet 1 INVENTORS. ARTHUR E. ZABRISKIE BYWILLIAM E. LUNDGREN ,4 T TOR/VEV A. E. ZABRISKIE ETAL 2,510,454

" CLOTH ROLL SUPPORT June 6, 1950 Filed Sept. 24,- 1948 .2 Sheets-Sheet 2 INVENTORS. ARTHUR E. ZABRIS KIE WILLIAM E. LUNDGREN UWIZ.%M

- ment;

Patented June 6, 1950 UNITED STATES PATENT OFFICE CLOTH ROLL SUPPORT Application September 24', 1948, Serial No. 50,933

14 Claims.

1 The present invention relates to a cloth roll take-up mechanism for looms.

In the usual take-up mechanism, the cloth passes around a take-up roll having a friction surface serving to engage and advance the cloth towards a cloth roll rotated by the friction driving action of the take-up roll.

One of the objects of the present invention is to provide a new and improved cloth roll supporting means, which effects automatic lowering of the cloth roll axis as the diameter of the cloth on said roll increases, While maintaining the cloth roll in friction drive yieldable spring-pressed contact with the take-up roll, which is adjustable to vary the spring pressure with which said cloth roll contacts said take-up roll for drive action, which is easily manipulable to effect up or down movement of the cloth roll with respect to the take-up roll, which is comparatively simple but nevertheless rugged and reliable in operacontrol means;

Fig. 2 is a section somewhat diagrammatic near the right-hand loomside and shows in full lines, the cloth roll supporting means of the present invention in lowered position and in dot and dash lines. the cloth roll supporting means elevated in position to begin the cloth winding operation;

Fig. 3 is a view partly in front elevation and partly in longitudinal section of the hub section of the cloth roll supporting means and shows its torsion spring plate element unstressed and before being torsionally adjusted for preloading;

Fig. i is a perspective of the torsion springplate element before being torsionally stressed;

Fig. 5 is a section of a portion of the cloth roll supporting means taken on the lines 5-5 of Fig. 3;

Fig. 6 is a section of a portion of the cloth roll supporting means taken on the lines 5-6 of Fig. 3;

Fig. '7 is a section of a portion of the cloth roll supporting means similar to the section of Fig. 5,

but showing the parts in the. process of being adjusted to stress torsionally the spring-plate ele- Fig. 8 is a section of a portion of the cloth roll supporting means similar to the section of Fig. 6 but showing the parts in the process of being adjusted to stress torsionally the spring-plate element; and

Fig. 9 is a perspective of the spring-plate element torsionally stressed.

Although the invention may be applied to a loom having a conventional type of frame structure with single web loomsides, it is shown in Figs. 1 and 2 applied to a loom having a frame structure of the improved form disclosed in copending application, Serial No. 691,237, filed August 1'7, 1946. In this improved type of frame structure, each loomside comprises a pair of parallel webs I0 and II rigidly interconnected by suitable bracing members. Although the right-hand loomside alone is shown in Figs. 1 and 2, it should be understood that the left-hand loomside is of similar double web construction.

Mounted near the front section of the loom is the take-up motion comprising a take-up roll 12 supported on the loomsides and driven from the crank shaft (not shown) of the loom in any suitable manner. The take-up roll I2 is covered with sandpaper or similar roughly surfaced material to grip frictionally the cloth A after it is formed and to advance it towards a cloth roll l3. The cloth roll [3 is spring-pressed into contact with the take-up roll l2, as will be described, and is frictionally driven thereby to wind the cloth around said roll l3 as said cloth is advanced by the friction feed action of said take-up roll.

Means are provided for maintaining the cloth A in controllable pressure friction gripping contact with the periphery of the take-up roll IE to afford effective advancement of said cloth towards the cloth roll I3. The pressure means shown comprises generally a pressure roll it extending in front of the take-up roll [2 and along substantially the full length thereof and supported at its ends in a pair of upright arms Hi slotted at their lower ends and supported at these ends on pivots l'l secured to the inner sides of the inside frame webs l0 respectively. Around the pressure roll I5 is a covering of felt or similar soft friction material adapted to engage the cloth as it passes around the take-up roll !2 and to press said cloth against said roll. The pressure r011 I5 is pressed against the take-up roll it to a controllable extent by means shown which for instance may be a cam means.

The cloth A passes around approximately three-qarters of the periphery of the take-up roll I2, passes over the freely rotatable pressure roll I and is then wound around the cloth roll I3. The pressure r011 I5 thereby serves not only as a means for pressing the cloth against the friction gripping surface of the take-up roll I2 but also as a guide for the cloth in its passage towards the cloth roll I3.

The full cloth. roll I 3 may be lowered out of drive engagement with the take-up roll I2 and the cloth cut ofi, to permit said cloth roll to be removed from the loom without moving the pressure roll I5 out of contact with said take-up roll. The cloth will therefore remain threaded in position around the take-up roll -12, while a new empty cloth roll is being set up on the loom.

The cloth roll I 3 is maintained in friction drive contact with the lower section of the take-up roll I2 to rotate said cloth roll at the speed necessary to wind the cloth therearound. For supporting the cloth roll I3 in a, manner to compensate for the progressive increase in its diameter as the cloth windingoperation proceeds, there is provided a clothroll support frame Hp'rvotall-y mounted to the inner webs I!) of the lo'omsi des in a manner to be described. The cloth roll support frame 22 comprises a pair of arms Zai and 24'- havim; an interconnecting hub 25' provided with pivot supports. The outer-roll supporting end of each arm 23 and 24 -has-a notch 26 lined'with an open semi-cylindrical bearing 21 'for'receiving the gudgeon 28 of a cloth roll shaft 30. The cloth rol-l shaft 30 is thereby f-ie'e to rotate'in the cloth roll support arms 23 -and24 and [is rotated by the friction drive engagement of the take-up roll I2 with the cloth wound around said cloth roll shaft.

The cloth roll support arms-'23 and Mare urgedangularly about their pivot supports to maintain the cloth roll IS in frictional contact with the take-up roll I2 under yieldable spring pressure, as will be more fully described. To pivotally support the cloth roll support arms 23 and 24; the hub 25 is in the form of cylindrical tube or barrel secured at one end, as for example by welding, to a journal support 'havingan axial cylindrical flange end-section 35 fitted snug-1y into one end of saidhub. Axially secured to the journal support 3 5 is a journal or gud'geon 31 journalled in a web I6 of the adjacent loomside and also in a backing bearing-plate 38' attached to the outer side of said loornside web Ill. The journal 31 has a shoulder 40 atone endfo abut-- ment with the inner face of the loomside web It and is secured to the journal support 35 by a stud 4i.

At the other end, 'thehdllow hub 25 is closed by a headpiece 42 iitted'into said hub with a snu relative rotati've fit and having a pawl and ratchet connection with sa'i'd'hub for the purpose to be made apparent. The head-piece is connected to a journal or gudgeon 4 3' journalled in the inner web "Ifl of the corresponding 'loomside and also in a backing bearing plate 44' attached to the outer face of said looms'ide web. The journal i'3is provided at one end with a shoulder '45 for abutment wi'ththe inner side of the corresponding loomside web H3 and is connected to the terior of the hub 25 a spring shown in the form of an elongated spring torsion slightly tapering plate extending along the axis of said hub diametrically of said hub. The spring 55 is anchored at one end with respect to the hub 25 and is twisted at the other end with respect to said hub to stress andwind said spring and thereby to urge the hub 25' in a rotative direction to press the cloth r011 I3 against the take-up roll I2. For that purpose, there is secured to one end of the hub 25 a head-piece 56 fitted snugly into said hub and extending partly into the bore of the end flange section 36 of the journal support 35 to afford compactness. The head-piece 56 is held securely to the hub 25 against rotation relative thereto by means of a pair of radially aligned studs 5'! and is provided with a diametrical groove 69 for receiving one end of the spring 55. To retain the spring 55 against edgewise movement in the slot 60 and to facilitate assembly, the end of the spring '55 anchored to. the head-piece 56 has a notch 6| extending lengthwise of said spring and chamfered at its outer end 62 to iacilitate its entry into engagement with an anchoring pin 63. The anchoring. pin 63 is contained in the intermediatesection of the bore formed to receivethe studs 51' and is retained therein by means of saidstuds'.

The other end' of'the spring '55 is secured to the head-piece 52' for rotation therewith, so that upon rotation of said head-piecerelative to the hub 25, said spring is twisted or wound torsionally. For securing this end'of the spring 55 to the head-piece 42, said head-piece has a diametrical slot 58 into which thisend of the spring extends and this spring end is secured to .said head-piece by a pin 59 press-fitted or otherwise firmly secured in a diametrical hole of said head-piece and passing through a hole 64 in said spring.

With the spring mounting-arrangement shown, the head-piece 56 is first mounted in position in the hub 25 at one end andthe head-piece 42 with one end of the spring 55-attached thereto is in serted into said hub at the other end, until the other free end of said springpassing into the slot 66 of said head-piece 56 engages the'pin 63 in said latter head--piece.

To effect the turning of the head-piece 42 for spring winding purposes, said head piece has a shoulder 65 abutting the outer end of the'hub 25 and an axial neck 66 projecting from said shoulder. Embracing'the neck'66 and'fi'rmly secured thereto is a ratchet wheel 67. The ratchet wheel 61 is locked to theneck'66 of the headpiece 42 in any suitable manner, as for example, by making said neck of keying configuration as shown, and by making the bore of said ratchet wheel through which said neck passes of corresponding shape.

To control the rotation of the ratchet wheel 61, there is provided a pawl 68 pivotally supported'on a pin Iii secured'fto a base II which is afiixed to the arm 23, as'for example, by welding. The pawl 63 cooperates with the teeth of the ratchet wheel 67 to permit said ratchet wheel to rotate counter-clockwise (Fig. 5) relative to said pawl, while locking said ratchet wheel against relative clockwise rotation. A second pawl I2 is pivotaily supported on a fixed pin "I3 constituting the head of a stud I4 threaded into the bearing plate M and'the adjacent loomside web Ii]. The pawl 52 cooperates with the teeth of the ratchet wheel 57' to permit'said ratchet wheel to rotate counter-clockwise while locking said ratchet wheel against clockwise rotation. The pawls 68 and 12 thereby cooperate with the ratchet wheel 61 in a manner to preload the spring 55, so that when the arms 23 and 24 are in their uppermost position shown in dot and dash lines in Fig. 2,

the driving pressure with which the cloth roll ing this clockwise rotation of the arms 23 and 24,

the right hand end of the spring 55 shown in Fig. 3, will rotate with the hub 25. Since the other left-hand end (Fig. 3) of the spring 55 is anchored to the head-piece 42 and since said head-piece is locked against clockwise rotation by the pawl 12, this end of the spring will be held against turning. As a result of the clockwise winding operation described, the spring 55 will be twisted or wound in the hub 25. The slight taper in the spring 55 facilitates this initial preloading of said spring.

After the arms 23 and 24 have been rotated clockwise from position shown in Fig. 5, to approximately the position shown in Fig. '7, as described, to cause initial twisting or winding of the spring 55 to an extent corresponding to a few teeth on the ratchet wheel 51, said arms are man- 'ually moved upwardly counterclockwise towards its initial position shown in Fig. 5. During this counter-clockwise return movement of the arms 23 and 24, the pawl 68 engaging the teeth of the ratchet wheel 61 rotates said ratchet wheel counter-clockwise as shown in Fig. 5,

counter-clockwise rotation being permitted by the pawl 12. As a result of this counter-clockwise return movement of the arms 23 and 24, not only will the head-piece 56 holding the righthand end (Fig. 3) of the spring 55 be rotated with the hub 25, but also the head-piece 42 holding the left-hand end of the spring 55 will be rotated in unison with said hub. During this counterclockwise return rotation of the arms 23 and 24 (Fig. 5), the spring 55 will remain torsionally wound or twisted to the extent to which said spring was wound or twisted duringv clockwise winding rotation (Fig. 5) of said arms. If the extent of preloading of the spring 55 is not sufficient after this initial operation, the clockwise rotation of the arms 23 and 24 (Fig. 5) is repeated to add additional twist to the spring 55 and these arms returned counter-clockwise (Fig. 5) to their original position. This winding action can be repeated until the necessary preloading stress has" been set up in the spring 55. Pawl 68 is then pivotally removed from engagement with ratchet wheel 61.

With the spring 55 preloaded in the uppermost angular position of the arms 23 and 24, proper 'friction drive contact between the cloth roll i3 and the take-up roll I2 is assured at the beginning of each cloth winding operation. As the cloth 'A is wound around the cloth roll [3 during loom operations and the diameter of said cloth roll is progressively increased, the arms 23 and 24 are automatically moved clockwise (Fig. 5). This clockwise movement of the arms 23 and 24 is eiiected without disturbing the ratchet wheel I 61 which is locked by the pawl I2 against clockthis cl aims.

wise rotation and is effected against the action of the torsionally twisted spring 55 tending to return to its unstressed state. The action of this spring, therefore, tends to effect a spring pressing of the cloth roll l3 against the take-up roll l2.

As the clothroll l3 diameter increases by the winding of the cloth thereon and as the arms 23 and 24 are moved clockwise (Fig. 5) about their pivot supports, the extent of twisting of the spring 55 is increased, thereby compensating for the increased weight of the cloth roll and maintaining the spring pressure, between the cloth roll l3 and the take-up roll I2, substantially constant.

In connection with the cloth roll support means described, there may be provided a cloth roll control means which permits lowering of the cloth roll axis as the diameter of said roll increases while maintaining said roll in friction drive contact with the take-up roll l2, which can be manipulated to lower the cloth roll l3 away from said take-up roll against the action of the spring 55, whichlcan be manipulated to lock the cloth roll in selected position with respect to the takeup roll to permit a full cloth roll to be easily removed from the cloth roll support means and an empty cloth roll to be easily mounted thereon, and which can be manipulated to permit controlled movement of the cloth roll towards drive relationship with respect to said take-up roll. This cloth roll control means per se forms no part of the present invention and is the subject matter of copending application Serial No. 50,932. filed Sept. 24, 1948. In general, this cloth control means comprises a brake or jack unit pivotally connected at 19 to the outer end of the arm 24 and slidable along an upright holding rod 8| which is pivotally mounted at its lower end 82 to the inner side of the frame web ID on the right-hand loomside. The jack or brake unit Bl) has a handle 83 which can be manipulatedv to lower the arms 23 and 24 against the action of the spring 55 and to permit said arms to rise controllably under the action of the spring 55. The handle 83 when mounted in one position, can be manipulated by a jacking or reciprocating angular movement to operate on one set of brake plates and to lower thereby the cloth roll I3 away from the take-up roll [2. A second set of brake plates in the jack unit 80 lock the cloth roll l3 against upward movement towards the take-up roll I 2 when said eloth roll has been lowered away from said take-up roll. By mounting the handle 83 in a different position, it can be manipulated to release this second set of brake plates, and to permit thereby the cloth roll l3 to move upwardly towards the take-up roll under the action of the spring 55 at a controlled rate determined by the manipulation of the handle 83.

While the invention has been described with particular reference to a specific embodiment, it is to be understood that it is not to be limited thereto but is to be construed broadly and restricted solely by the scope of the appended What is claimed is:

1. In a take-up mechanism for a loom, a cloth roll, means supporting said cloth roll for movement towards'and away from driven position, a spring plate adapted when twisted tcrsionally to urge said supporting means towards said driven position, and means for rotating one end of said spring plate relative to the other end to varying selected degrees for preload ing purposes.

2. In-a;talre-aupzmecharnsm ifOl a ,loom, a taketherebetween, and mounted for angular movement about :an axis,

-whereby said arms by their angular movement aboutsaid axis zmovexsaidicloth roll towards and away from driven position with--respect 'to said i'taike-up roll, and a torsionally twisted spring plate extending along-said axis and acting onssaid arms to urge-said arms angularly in a direction to move said cloth roll towards said take-up roll.

'3. In a take-up mechanism for a loom, the combination as described in claim 2, comprising :a hollow hub along said axis-interconnecting said arms, said spring plate extending in and along said hub.

4. In aitake-up mechanism for a loom, a cloth roll, a pair of arms for supporting said cloth roll therebetween and mounted for :angular movement'about an-axis, whereby said arms by their angular movement about said axis move said cloth'roll towards and away from driven position, a hollow hub along said axis interconnecting said arms, means supporting said hub for rotation,

about said axis, a spring plate in said hub extending therealong, means anchoring one end of said spring plate for rotation with said hub about said axis, and means for anchoring :the other end of said spring plate against rotation and in twisted torsionally stressed relationship with respect to the opposite end, to urge thereby said arms towards a position in which said cloth roll is driven.

5. In a take 'upmechanism for a loom, the i combination as described :in claim 4, the meansfor anchoring said other spring end being adjustable to vary selectively the torsional stress on said spring plate and thereby the preloadin stress on said spring plate.

6. In a take-up mechanism for a loom, a cloth roll, means supporting saidv cloth roll for angular movement about an axis towards and away from driven position, a spring plate extending along said axis; means anchoring one end of said spring plate for rotation about said axis as said cloth roll is-moved angularly about said .axis towards and away from'driven position, and means for anchoring the other end-0f said spring plate against rotation and in twisted torsionall-y stressed relationship with respect to the opposite "end, to urge thereby sai'd cloth roll towards driven position.

7. In a take-up mechanism for a loom, the

combination as described in claim 6, comprising a pawl and ratchet device between said cloth roll supporting means and said other end of the therebetween and mounted for angular movement about an axis, whereby said arms by their movement about said axis move said cloth roll towards and away from driven position, a hollow hub along said axis and between said loomsides interconnecting said arms, means supporting said hub to said loomsides for rotation about said axis, a head-piece at one end of said hub secured thereto for rotation-therewith. a. head-piece at .135' a pair of arms for supporting said cloth roll' the other end of said latter head-piece to the adjoining 'loomside against rotation about said axis in a direction hub, means locking :said

corresponding to the movement of said cloth roll away from driven position, said hub being rotatable with-respect'to said second mentioned head- .piece, and a torsion spring :in said hub having one end anchored to said first mentioned headpiece and its other end secured to said second mentioned head- -piece in torsionally stressed condition of said spring, whereby said spring urges said cloth roll towards driven position.

9. In a take-up mechanism for a loom, the-combination as described in claim -8, in which said torsion spring is intheform of a spring plate torsionally stressed by twisting.

10. In a take-up mechanism for a loom, the combination as described in claim 8, in which said torsion spring is in the form of a spring plate torsionally stressed by twisting and in which said locking means is in the form of a ratchet and pawl device to permit rotation of said second mentioned head-piece and thereby adjustments in the torsional stress of said spring.

11. In a take-up mechanism for a loom, a pair of loomsides, a take-up roll between said loomsides, a cloth roll between said loomsides adapted to be driven by said take-up roll, a pair of arms for supporting said cloth roll therebetween and mounted for angular movement about an axis, whereby said arms by itheir movement about said axis move said cloth roll towards and away from driven'position with respect to said take-up roll, a hollow hub along said axis and between said loomsides interconnecting said arms, journal means supporting said hub to said loomsides for rotation about said axis, :a head-piece at one end of said hub secured thereto for rotation therewith, a head-piece extending into the other end of said hub and having a rotative fit with respect to said hub, said journal means comprising a journal rigid with said second menioned head-piece and journalled in the adjoining loomside, a ratchet wheel rigid with said second mentioned head-piece for rotation therewith, a pawl supported on a fixed axis and cooperating with the teeth of said wheel to lock said wheel against rotation in one direction when said cloth roll is being moved in a direction to move its axis away from said take-up roll, while permitting said wheel to rotate in the opposite direction, a second pawl cooperating with said teeth and mounted :for movement of its axis with said hub, said second pawl engaging said teeth to rotate said wheel in said opposite direction when said cloth roll is moved towards said takeup roll, while moving idly over said teeth when said cloth roll is moved away from said take-up roll, and a torsion sprin plate having its ends anchored to said head-piece respectively and adapted to be torsional-1y twisted by said headpieces to stress said spring plate and thereby urge said cloth roll towards driven relationship with respect to said take-up roll.

12. In a take-up mechanism for a loom, a cloth roll, means for supporting said cloth roll for angular movement about an axis towards or away from driven position and including a hub extending along said axis and mounted for pivotal movement about said axis, a head-piece aflixed to one end of said hub for rotation therewith and having a diametric-al slot, a head-piece at the other end of said hub extending thereinto and serving as a bearing support for said hub, said .75..

latter head-piece havi ga diametrical slot, means locking said second mentioned head-piece against rotation about said axis in a direction corresponding to the movement of said cloth roll away from driven position, and a spring plate in said hub extending along said axis and having its ends extending into said slots respectively, said second mentioned head-piece being rotatably adjustable with. respect to said first mentioned headpiece to torsionally twist said spring plate and thereby to urge said cloth roll towards driven position.

13. In a take-up mechanism for a loom, the combination as described in claim 12, said headpieces having respective pins extending transversely through said slots respectively, one end of said spring plate having a hole through which the corresponding pin passes, while the other end of said spring plate has a notch extending lengthwise thereof and removably engaging the other pin.

14. In a take-up mechanism for a loom, a cloth roll, means for supporting said cloth roll for angular movement about an axis towards and away from angular position including a hub extending along said axis and mounted for pivotal movement about said axis, a head-piece aflixed to one end of said hub for rotation therewith, a head-piece at the other end of said hub, said hub being rotatable with respect to said second mentioned head-piece, means for locking said second mentioned head-piece against rotation when said cloth roll is moved away from driven position, means for locking said second mentioned head-piece to said hub for rotation therewith when said cloth roll is moved towards said driven position, and a spring in said hub having its ends anchored to said head-pieces respectively and serving when torsionally stressed to urge said cloth roll towards driven position.

ARTHUR E. ZABRISKIE.

WILLIAM E. LUNDGREN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 674,424 Meats May 21, 1901 2,238,380 Almen Apr. 15, 1941 2,425,781 Bergstrom et a1. Aug. 19, 1947 FOREIGN PATENTS Number Country Date 11,368 Great Britain of 1915 

